Petrology, geochemistry, and isotopic composition of magmatic sulphide occurrences in the Montagnais Sill Complex, northern Quebec, Canada

拉布拉多海槽仍然是加拿大地质上勘探最少的地区之一。该地区被广泛的玄武岩岩浆和岩浆流所覆盖，这些岩浆被置于一层厚厚的含硫化物的泥质和碳质岩石中。基于与其他一些大型火成岩省（特别是Noril'sk）的地质相似性，这表明岩浆镍铜pge矿床的前景增强。该项目将与加拿大勘探公司Northern Shield合作，该公司在该地区拥有多个项目。该公司已经划定了几个Ni-Cu-PGE矿化区域，并且正在优先目标上进行钻探，特别是在Huckleberry。该学生将利用该公司现有的露头、钻孔岩心和土壤地球化学数据库，结合新的野外工作和地球化学分析，评估该地区岩浆矿床的前景。该项目的总体目标是：(1)更好地了解加拿大北部这一相对不为人知和勘探的地区的地质演化，(2)确定Cu-Ni-PGE前景增强的目标，以及(3)评估northern Shield最近发现的Huckleberry矿床的岩浆结构和岩石成因。为了实现这些目标，学生将检查拉布拉多海槽中选定的侵入/喷发中心，以限制各种岩浆地层及其寄主岩石的组成，建立岩浆流动方向和不同岩浆单元的绝对和相对年代学，因为这可能允许定义矿石的矢量。研究方法包括野外测绘和露头岩石学/地球化学分析和钻芯样品；在过去的4年里，北盾公司在拉布拉多海槽收集了大量现有的岩石样本和地球化学以及地球物理数据。学生还将有机会与目前活跃在该地区的加拿大地质调查局的地质学家进行互动和交流。

The Labrador trough remains one of the geologically least explored regions of Canada. The area is covered by extensive sills and flows of basaltic magma, emplaced into and onto a thick package of sulphide bearing pelitic and carbonaceous rocks. Based on geological similarities with some other large igneous provinces, notably Noril'sk, this suggests enhanced prospectivity for magmatic Ni-Cu-PGE ore deposits. This project will be in collaboration with Northern Shield, a Canadian exploration company with projects across the area. The company has delineated several Ni-Cu-PGE mineralised areas and drilling is ongoing on priority targets, notably at Huckleberry. The student will use the company's existing outcrop, drill core and soil geochemical database in combination with new field work and geochemical analysis to evaluate the prospectivity of the region for magmatic ore deposits.The overarching aims of the project are (i) to generate a better understanding of the geological evolution of this relatively poorly known and explored region in northern Canada, (ii) to identify targets of enhanced Cu-Ni-PGE prospectivity, and (iii) to evaluate the magmatic architecture and petrogenesis of the Huckleberry deposit, recently discovered by Northern Shield. To achieve these aims, the student will examine selected intrusive/eruptive centres across the Labrador trough to constrain the composition of various magmatic formations and their host rocks, establish magma flow directions and the absolute and relative chronology of distinct magmatic units, as this may allow to define vectors to ore. Research methods include field mapping and petrographical/geochemical analysis of outcrop and drill core samples, complemented by a vast existing database of rock samples and geochemical as well as geophysical data collected by Northern Shield in the Labrador trough over the course of the last 4 years. The student will also have the opportunity to interact and exchange ideas with geologists of the Geological Survey of Canada who are currently active in the area.